Answer: Okay so find the area of the big shape.7x15=105Now find the area of the small one which is:5x13=65And now all you have to do is take away the area of the small box away from the big box. So...105-65=40... But remember to put in the right form which is cm but since we found the area of 2d shape it's going to be cm2. So.... 40cm2
